Moreover, for two particular cases for which the Cauchy–Green stress tensor \(\rho {F}{F}^\top \)  is diagonal for the unperturbed flow, by the test of the uniform Lopatinski condition [1]} it was shown in [2]} that the stability condition (REF ) is necessary for uniform stability. Regarding the case of general deformations, it was also proved in [2]} that, as in isentropic gas dynamics [4]}, all compressive shock waves are uniformly stable for convex equations of state (for them the uniform stability condition (REF ) always holds).
